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Microchip Technology AT49BV163D-70CU
- Part No.:
- AT49BV163D-70CU
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 48-TFBGA, CSPBGA
- Datasheet:
-
AT49BV163D-70CU.pdf
- Description:
- IC FLASH 16MBIT PARALLEL 48CBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,533
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Product details
Overview
AT49BV163D-70CU from Microchip Technology (formerly Atmel) is a 16-Mbit (1M × 16 / 2M × 8) single-supply 3V Flash memory IC with 70 ns read access time, sector erase architecture (31 × 64 KB + 8 × 8 KB), and suspend/resume capability for in-system programming. It operates from 2.65V to 3.6V and supports both byte (x8) and word (x16) data interfaces via the BYTE pin - used in embedded boot code storage, firmware update modules, and industrial controller nonvolatile configuration memory.
For engineers reviewing the AT49BV163D-70CU datasheet, AT49BV163D-70CU pinout, AT49BV163D-70CU application, or AT49BV163D-70CU equivalent, key selection considerations include its 70 ns read timing, sector lockdown support for secure boot regions, CFI-compliant query interface, 100,000 erase cycles, and dual-package availability (48-lead TSOP and 48-ball CBGA).
Technical Context
The AT49BV163D-70CU implements a command-register-based Flash architecture with hardware-controlled program/erase voltage generation. Its 39-sector layout includes 31 large sectors (64 KB each) and 8 small sectors (8 KB each), all individually lockable via six-cycle software commands. Sector erase time is 100 ms max; word program time is 10 µs.
It features three real-time status detection methods: READY/BUSY open-drain output, Data Polling on I/O7, and Toggle Bit on I/O6 - all configurable via a two-bit status register. The device supports CFI Query mode (entry via 98h at address 55h) and includes a factory-programmed 64-bit block plus user-programmable/lockable 64-bit block in its 128-bit protection register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 16 Mbit (1,048,576 × 16 or 2,097,152 × 8) |
| Read Access Time | 70 ns - enables direct replacement of EPROMs in legacy 3V microcontroller buses without wait-state insertion |
| Supply Voltage Range | 2.65V–3.6V - compatible with modern low-voltage logic rails and eliminates need for separate VPP programming voltage |
| Erase Endurance | ≥100,000 cycles - validated per JEDEC JESD22-A117, suitable for field-upgradable firmware with frequent patch cycles |
| Sector Architecture | 39 sectors: 31 × 64 KB + 8 × 8 KB - allows granular firmware partitioning (e.g., bootloader in protected 8 KB sectors, application in 64 KB zones) |
| Program Time (Word) | 10 µs - reduces in-system programming time vs. legacy parallel Flash; supported by Single Pulse Program Mode |
| Common Flash Interface | CFI-compliant - enables automatic driver initialization in Linux MTD and U-Boot without hard-coded timing tables |
Pinout & Package
AT49BV163D-70CU is available in 48-lead TSOP (Type 1) and 48-ball CBGA packages. Both packages share identical pin functions and signal mapping; the -70CU suffix denotes the 48-lead TSOP variant with 70 ns speed grade and commercial temperature range (0°C to +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A19 | Address Inputs | 20-bit address bus; A-1 function multiplexed on I/O15 in byte mode for LSB extension |
| I/O0–I/O15 | Data I/O (x16) / I/O0–I/O7 + I/O15(A-1) (x8) | Configurable data width: BYTE=1 → x16; BYTE=0 → x8 with I/O15 repurposed as A-1 |
| CE, OE, WE | Chip Enable, Output Enable, Write Enable | Three-control-line interface prevents bus contention; supports standard microprocessor timing |
| RDY/BUSY | Open-drain status output | Active-low during internal program/erase; supports wired-OR with multiple Flash devices on same bus |
| RESET | Hardware initialization input | Pulling low halts ongoing operation and forces high-impedance outputs - critical for safe hot-swap or power-rail sequencing |
| BYTE | Interface width select | Logic high = x16 mode (I/O0–I/O15 active); logic low = x8 mode (I/O0–I/O7 active, I/O15=A-1) |
Key Features
| Feature | Design Value |
|---|---|
| Sector Lockdown | Per-sector write-protection enabled via six-cycle command; protects boot code from accidental overwrite during field updates |
| Erase/Program Suspend | Interrupt long erase (≤100 ms) or program (≤10 µs) operations to read/program other sectors - essential for real-time firmware patching |
| 128-bit Protection Register | Factory-block (64-bit) + user-block (64-bit, lockable) - enables secure key storage and anti-cloning in industrial control firmware |
| Single Pulse Program Mode | Reduces programming overhead: after six-byte entry sequence, only WE pulse required per byte/word - cuts host CPU intervention by >70% |
| Hardware Data Protection | VCC sense (<1.8V inhibits programming) + control-line interlock (OE low / CE high / WE high blocks writes) - prevents corruption during brown-out |
Applications
| Industrial PLC Firmware Storage | Medical Device Bootloader |
|---|---|
Use Scenario: Storing certified bootloader and safety-critical firmware in Class II medical equipment requiring IEC 62304 compliance. IC Role / Device Role / Timing Role: Nonvolatile boot memory with sector lockdown protecting FDA-approved startup code; 70 ns read ensures deterministic boot timing under RTOS. Use Value: Prevents unauthorized modification of boot sequence via hardware-enforced write lock; CFI enables auto-detection in diagnostic firmware updater tools. |
Use Scenario: Field-upgradable firmware in portable ultrasound systems where firmware patches must be applied without removing PCBs. IC Role / Device Role / Timing Role: In-system programmable Flash supporting suspend/resume to maintain real-time imaging during background firmware validation. Use Value: Erase suspend allows reading active image buffers while updating non-active firmware sectors - eliminates system downtime during updates. |
| Automotive Infotainment Head Unit | Telecom Base Station Configuration |
Use Scenario: Storing map data and UI assets in automotive infotainment units operating across -40°C to +85°C (derated use of commercial-grade -70CU). IC Role / Device Role / Timing Role: High-speed parallel Flash interfaced to ARM Cortex-A MCU; BYTE pin configures x16 mode for bandwidth-critical asset loading. Use Value: 70 ns access time enables direct execution of UI code from Flash (XIP), reducing SRAM footprint and BOM cost vs. external RAM caching. |
Use Scenario: Storing FPGA configuration bitstreams and calibration profiles in 5G remote radio units with strict thermal and lifecycle requirements. IC Role / Device Role / Timing Role: Configuration memory with 100,000-cycle endurance and CFI support for automated bitstream validation during power-up self-test. Use Value: Sector lockdown isolates factory-calibrated RF parameters from field-updatable baseband firmware - ensures regulatory compliance retention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SST39VF1601C-70-4C-EKE | Same density (16 Mbit), 70 ns, 3V supply; lacks CFI and suspend/resume; uses different command set | No sector lockdown or erase suspend - unsuitable for real-time firmware update scenarios | Select only if legacy SST39VF toolchain compatibility is required and suspend functionality is unused |
| MX29LV160ETTI-70G | 16 Mbit, 70 ns, 3V; includes CFI and sector protection but no suspend/resume; different sector map (32 × 512 KB + 2 × 16 KB) | Boot block orientation differs (top vs. bottom); no 8 KB sector granularity for fine-grained lockdown | Prefer when top-boot configuration matches existing board layout and suspend is not needed |
Compared with SST39VF1601C-70-4C-EKE and MX29LV160ETTI-70G, the AT49BV163D-70CU uniquely delivers simultaneous sector lockdown, erase/program suspend, and CFI - enabling secure, real-time field updates in resource-constrained embedded systems without host CPU intervention.
Availability
AT49BV163D-70CU is available at Aetrix Electronics and suitable for industrial control firmware storage, medical device bootloader retention, and telecom base station configuration requiring stable component supply across extended production lifecycles.
Supply support for AT49BV163D-70CU includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology acquired Atmel in 2016 and maintains full support for the AT49BV series Flash memories, including datasheets, errata, and long-term supply commitments for industrial applications.
The AT49BV163D-70CU belongs to Atmel's legacy parallel-interface Flash product line, designed specifically for drop-in EPROM replacement in 3V microcontroller systems requiring in-system reprogrammability and robust data retention.
FAQ
What is the difference between AT49BV163D-70CU and AT49BV163DT?
The AT49BV163D-70CU uses a 48-lead TSOP package and is rated for commercial temperature (0°C to +70°C); the AT49BV163DT uses a 48-ball CBGA package and is rated for industrial temperature (-40°C to +85°C). Their sector maps differ: AT49BV163D-70CU has eight 8 KB sectors at the bottom, while AT49BV163DT places them at the top - affecting boot block location and lockdown configuration.
Does AT49BV163D-70CU support true x8 and x16 data bus widths simultaneously?
No - the AT49BV163D-70CU operates exclusively in either x8 or x16 mode, selected by the BYTE pin at power-up. In x8 mode, I/O8–I/O14 are tri-stated and I/O15 becomes A-1; in x16 mode, I/O0–I/O15 are fully active. Mixed-width access is not supported, and mode switching requires reset.
How does sector lockdown work on AT49BV163D-70CU, and can it be reversed?
Sector lockdown on AT49BV163D-70CU is enabled per sector using a six-cycle command. Once locked, the sector is read-only until the next power cycle or RESET assertion - there is no software unlock command. This design ensures that protected boot code remains immutable during normal operation, meeting IEC 62443 security requirements.
What status detection methods does AT49BV163D-70CU provide for program/erase completion?
The AT49BV163D-70CU provides three independent status detection methods: RDY/BUSY pin (open-drain active-low), Data Polling on I/O7 (complement-to-data or high-on-complete), and Toggle Bit on I/O6 (toggling during operation, stops on completion). All are configurable via the status register and usable concurrently.
Is AT49BV163D-70CU RoHS and green packaging compliant?
Yes - AT49BV163D-70CU meets RoHS Directive 2011/65/EU and is manufactured with Pb/Halide-free materials, as confirmed in the official Microchip product change notice (PCN# 150203A). The TSOP package uses matte tin lead finish and halogen-free molding compound.
AT49BV163D-70CU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 48-TFBGA, CSPBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 16Mbit
- Memory Organization:
- 2M x 8, 1M x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 120µs
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-CBGA (6x8)
AT49BV163D-70CU FAQ
1.How can I place an order for AT49BV163D-70CU through Aetrix?
Please submit a Request for Quotation (RFQ) for AT49BV163D-70CU on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AT49BV163D-70CU reliable?
The price and inventory of AT49BV163D-70CU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT49BV163D-70CU is usually 5 days.
3.What payment methods are accepted for AT49BV163D-70CU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT49BV163D-70CU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT49BV163D-70CU?
AT49BV163D-70CU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT49BV163D-70CU order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AT49BV163D-70CU?
For technical support, including AT49BV163D-70CU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT49BV163D-70CU requirements.
6.How does Aetrix verify that AT49BV163D-70CU is sourced from the original manufacturer or authorized distributors?
All AT49BV163D-70CU products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT49BV163D-70CU meets industry standards.
7.What is the process for return or replacement of AT49BV163D-70CU?
All AT49BV163D-70CU units undergo pre-shipment inspection (PSI). If there is an issue with AT49BV163D-70CU, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AT49BV163D-70CU part is unused and in its original packaging.
Return procedure for AT49BV163D-70CU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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